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 According to the image you sent, the screen sharing service is disabled because the remote management service is turned on. You can’t have both screen sharing and remote management on at the same time. Remote management allows you to perform more advanced tasks on another Mac, such as installing and configuring apps, helping remote users, and creating detailed reports. Screen sharing allows you to view and control another Mac’s screen. To enable screen sharing, you need to turn off remote management first. You can do this by going to System Settings > General > Sharing and deselecting Remote Management. Then you can check the box next to Screen Sharing to turn it on. Alternatively, you can use Apple Remote Desktop, a commercial app that combines the features of screen sharing and remote management, and works with both Intel-based and Apple silicon Macs.  References :  Turn Mac screen sharing on or off - Apple Support ,  Mac screen sharing won’t work? Disable it! Then turn it back on ,  Revive or restore a Mac with Apple silicon using Apple Configurator - Apple Support